JP2538855Y2 - Structure of waterproof connector - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof electrical connector which can be used in such an environment as water drops.

[0002]

2. Description of the Related Art To make an electrical connector waterproof,
Not only does the connector housing itself have a watertight structure,
The gap between the electric wire having terminals inserted into the housing and the housing also needs to be a watertight structure. For this purpose, usually, as shown in a perspective view in FIG. 5 and a side view in FIG. 6, after the electric wire b is inserted through the waterproof plug a, the terminal c is fixed to the electric wire b and the fixed cylindrical portion a ₁ of the waterproof plug a by crimping. Terminal c is inserted into a housing (not shown).

The operation of inserting such a terminal into a housing has a drawback that when the wire is thin, the wire is easily bent and the insertion work becomes extremely difficult.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks of the prior art. A waterproof plug holder is provided in a connector housing , and a terminal to which an electric wire is connected is waterproofed in advance. and facilitating the operation of inserting the pin by passing it through a waterproof plug attached to the plug holder, and waterproof
It is an object of the present invention to provide a highly reliable waterproof connector which can securely hold a waterproof plug by a stopper holder .

[0005]

To achieve the above object, according to an aspect of the present invention is a waterproof having a plurality of terminal insertion openings corresponding to the connector housing and said plurality of terminal accommodating tubular portion having a plurality of terminal accommodating tube portion A plug holder, and a waterproof plug is engaged with and held on a peripheral edge of the terminal insertion port inside the waterproof plug holder ,
Fixing the waterproof plug holder to the connector housing.
The waterproof plug is fitted to the inner wall of the terminal accommodating cylinder.

[0006]

[Function] Since the waterproof plug engaged and held inside the waterproof plug holder is fitted to the inner wall of the terminal accommodating cylinder, the terminal accommodating cylinder into which the terminal is inserted has a watertight structure, and the terminal side to which the electric wires are connected is provided. A watertight plug is not required, and a highly watertight electrical connection can be realized by the same operation as a normal non-waterproof terminal.

[0007]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention, in which a connector housing A has six terminal accommodating cylinders 1 provided therein. B denotes a waterproof plug holding body attached to the rear part of the connector housing A, which has six terminal insertion ports corresponding to the terminal accommodating cylinders 1, and which connects the waterproof plug 2 inside the terminal insertion port 3. /> We are engaged around. C is a terminal to be inserted and connects the electric wire D. Reference numeral 4 denotes a locking lock piece, and a locking projection 5
It is intended to lock the waterproof plug holder B fixed to engage the connector housing A in.

FIG. 2 is a partial cross-sectional view of the waterproof plug holder B, showing a state in which the waterproof plug 2 is engaged around the terminal insertion opening 3. An engaging projection 6 is formed on the peripheral edge of the terminal insertion port 3 on the side of the terminal accommodating cylinder 1, and the engaging recess 7
To hold the waterproof plug 2. As shown in the sectional view of FIG. 3, the waterproof plug 2 is formed by molding a flexible and elastic material such as rubber into a cylindrical shape whose outer peripheral portion 2a has a corrugated cross section, and has a terminal fitting hole 8 formed at the center. The engaging recess 7 is formed on the surface in contact with the waterproof plug holder B. The outer diameter is formed to be slightly larger than the inner diameter of the terminal housing tube 1 so as to be in close contact with the inner wall 1a when fitted to the terminal housing tube portion 1.

FIG. 4 is a partial cross-sectional view showing a state in which a waterproof plug holder B is engaged with the connector housing A. The waterproof plug 2 is fitted to the inner wall 1a of the terminal housing tube 1. The outer peripheral portion 2a of the waterproof plug 2 is in close contact with the inner wall 1a, and the inner peripheral surface 2b of the waterproof plug 2 is in close contact with the terminal C to be inserted. Note that a tapered portion 9 is formed on the outer surface of the waterproof plug holder B so that the terminal C can be easily inserted. Use
At the time of use, the terminal C to which the electric wire D is connected is waterproof 2
And is locked by a known locking means in the terminal accommodating cylinder portion 1.
Then, the waterproof plug holder B is connected to the connector housing A.
Securely fit each waterproof plug 2 into the corresponding terminal housing tube 1
I do.

[0010]

[Effect of the Invention] In the present invention, the waterproof plug holder is engaged.
The terminal plug provided in the connector housing is
It becomes possible to make the inside of the container a watertight structure, and the terminal accommodation tube
Insert a terminal or wire into a non-compressed waterproof plug that does not fit
When passing through, each waterproof plug is independent of each other and
Since the amount of flexible elasticity to be accommodated is large,
The work is easy, and each waterproof plug is connected via a waterproof plug retaining body.
The fitting operation is performed accurately and promptly because
Can be obtained quickly.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

FIG. 2 is a partial sectional view of the waterproof plug holder in FIG.

FIG. 3 is a sectional view of the waterproof plug shown in FIG. 2;

FIG. 4 is a partial cross-sectional view showing a state in which a waterproof plug holder is engaged with a connector housing.

FIG. 5 is a perspective view of a conventional example.

FIG. 6 is a side view of FIG. 5;

[Explanation of symbols]

 A Connector Housing B Waterproof Plug Holder 1 Terminal Housing 1a Inner Wall 2 Waterproof Plug 3 Terminal Insertion Port

Claims (1)

(57) [Scope of request for utility model registration] 1. A consists waterproof plug holder having a plurality of terminal insertion openings corresponding to the connector housing and the plurality of terminal accommodating cylinder portion of which a plurality of terminal accommodating cylindrical portion, waterproof plug holding member <br/> Engage and hold each waterproof plug on the periphery of the terminal insertion port inside the
A structure of a waterproof connector, wherein the waterproof plug is fitted to an inner wall of the terminal housing by fixing the waterproof plug holder to the connector housing.